1. The bottle blowing machine
for different items refers to the bottle blowing machine. The most simple explanation is the machine that can blow plastic particles (softened into liquid) or finished preforms into bottles through certain technological means. The bottle blowing machine is convenient and quick, and has a large amount of molding. After it appeared, it replaced most of the manual bottle blowing and was adopted by most beverage companies. After the blow molding machine
sprays out the liquid plastic, it uses the wind blown by the machine to blow the plastic body into a certain shape of the mold cavity to make a product. The plastic is melted and quantitatively extruded in the screw extruder, and then formed through the mouth film, and then cooled by a wind ring, then a tractor is pulled at a certain speed, and the winder winds it into a roll. 2. The principle is different. The bottle blowing machine irradiates the preform (embryo) through the infrared high-temperature lamp to heat and soften the preform (embryo) body part of the preform (embryo). In order to maintain the shape of the bottle mouth, the preform (embryo) mouth is not It needs to be heated, so it needs a certain cooling device to cool it. The blow molding stage is to place the pre-heated preform (embryo) into the ready blow mold, inflate it with high pressure, and blow the preform (embryo) into the required bottle. Bottle blowing machines on the market are generally divided into automatic and semi-automatic. The automatic bottle blowing machine combines the two operations of bottle blowing through the operation of the manipulator, eliminating the need for the manual process of putting the preheated preform (embryo) into the blow mold. Greatly speed up the production rate, of course, the price is also higher than the semi-automatic. The automatic air ring structure of the blow molding machine adopts a double air outlet method, in which the air volume of the lower air outlet remains constant, and the upper air outlet is divided into several air ducts on the circumference. Each air duct is composed of air chambers, valves, motors, etc., and the motor drives the valve to adjust The opening degree of the air duct controls the air volume of each air duct. During the control process, the film thickness signal detected by the thickness measuring probe is sent to the computer. The computer compares the thickness signal with the current set average thickness, performs calculations based on the thickness deviation and the curve change trend, and controls the motor to drive the valve to move. When it is thin, the motor moves forward and the tuyere is closed. On the contrary, the motor moves in the reverse direction, and the tuyere increases. By changing the air volume of each point on the circumference of the wind ring, adjust the cooling speed of each point, so that the lateral thickness deviation of the film is controlled within the target range
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